US933858A - Gang-plow. - Google Patents

Description

G. SMART.

GANG PLOW.

APPLICATION FILED 'MAY 4, 1909.

933,858.,I Patented sept.14,19o9.

G. SMART. GANG PLOW.

APPLICATION FILEDMAY 4, 1909.

4 SHEETS-SHEET 2 G. SMART.

GANG PLOW.

AYPLIOATION FILED MAY 4, 1909. v 933,858, 4 Patented Sept. 14, 1909 4 SHEETS-SHEET ab ai@ lg/ZP l /6 ZJ 7 0 o o o? @mxl n f1 n 05 .51

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rr srr CHARLES SMART, OF HENDRUM, MINNESOTA.y

GANG-PLOW.

Specification of Letters Patent.

Patented sept. 1a, 1909.

Application filed May 4, 1909. Serial No. 493,927.

.To all whom it may concern:

Be it known that I, CHARLES SMART, citizen of the United States, residing at Hendrum, in the county of Norman and State of Minnesota., have invented certain new and useful Improvements in Gang-Flows, of

. tione which the following isla specification.

This invention relates to' gang plows of that type adapted and intended to be hauled by traction engines.

An object of the invention is to provide improved means for attaching the gang or series of plows to a triangular frame, so as to allow the individual plows to respectively conform to the unevenness of the ground.

A further object of the invention is to provide improved devices for connecting therespective plows to the frame in such' manner that they will not tip over, but will nevertheless be allowed two motions, that is, vertical movement and horizontal swing.

A. further objectvof the invention is to provide improved means for lifting and lowering the plows in succession. Since the plow units are connected .to the frame on a diagonal line, it is necessary or desirable that the plows be lifted in succession, with suicient dierence in time of operation to bring the furrows even at the ends thereof; and it is also desirable that the plows be lowered in succession, so that the furrows may start evenly. By devices hereinafter shown and described these results are accomplished, the construction embodying mutilated gears the teeth of which respectively engage, in succession, pinions which operate hoisting devices connected to the respective plows. And in order to let theplows down in succession, each of the mutilated 'gear wheels is provided with a releasing device, and said devices operate in turn to release the successive hoisting devices by which the plows are held in raised position, thereby allowing said plows to drop in succession. The ears and other devices are proporto the distance apart of the y that is, the distance of one behind the other along the line', of draft, in order that the desired result, above referred to, may be effected.

pro'vide' an improved tri mechanism for operating the hoisting evices above referred to, said trip mechanism being under the control of the operator or driver, the power to hoist the plow units being derived plows,v

cross brace 19.

A further object of the invention is toV from the main carrying or driving wheel of the plow.

With these and other objects in View the invention is illustrated in the accompanying drawings in which- Figure 1 is a plan View of the plow. Fig. 2 is a partial side elevation showing the trip-V ping devices. Fig. 3 is a partial rear elevation looking at a right angle to the diagonal part of the frame, and with the plow units removed. Fig. 4 is a sectional view showing the hoisting'devices for one of the plows, said plow being in lowered position. Fig. 5 is a similar View showing the hoisting mechanism from the opposite side, the plow being in raised position. Figs. 6 and 7 are `deta1ls of the plow beam and the casting for connecting the same to the clevis. Fig. 8 is a side view similar to Fig. 2, but with the 'tripping device in different position.

Referring specifically to the drawings, the main frame consists of a Vfront cross bar 6, a left side bar 7 and diagonal upper and lower bars 8 and 9, with longitudinal connecting bar 10 between the ,front and diagonal bars, the latter being carried upon the axle of the main wheel 12'. which is located at the center of the line of draft.A The front and side bars are preferably double T beams of structural steel, the diagonal bars 8 and 9 are preferably angle bars of the necessary strength.

These bars and-'beams are bolted together to. form the triangular frame. A caster wheel tached along the diagona bars, and above the plow unitsis located a diagonal beam .14,

supported by orved overhanging standards 15 rising from the diagonal bars 8 and 9. The upper hoisting pulleys 16 are hung from the bar 14. Each of the plow units is connected to the dia onal beams of the frame by devices now to e described. Each plow unit is provided with a 'main beam 17 and a side or wing beam 18, the latter springing .from the bend of the main'beam and extending forwardly beside the same, and at the front ends the said beams are connectedby a They are also connected to a tubular casting -20 by means of a bolt 20a which extends horizontally, and the casting has on its front side a vertical sleeve21, 1ocated in line with the front end ofthe main beam 17, andthis sleeve ts'and is slidable the gang are at up and down on the verticalelevis boit 22% l which is supported at top and bottom by a hanger or bracket 23 bolted to the diagonal bars 8 and 9. When the plow is raised or lowered the sleeve 21 slides up and d own on the bolt. The clevis connection as described also allows the plowl to swing laterally to a limited extent.. The attachments described are individual to each of the plow units, and accordingly each plow unit may be raised .or lowered independently.

The hoisting devices for each plow are shown particularly in Figs. 1, 4 and 5. A chain 24 is connected to the plow beam and extends thence substantially vertically to the pulley 16, over which it passes and extends lhenee downwardly and over a pulley 25 set n a bracket 26 projecting from one side of the hanger 23, andthence the chain extends upwardly and is connected to a segment 27.

There is one of these segments for each low and cach one is mounted on a short sha t 28- supported by brackets 29 on the angle bar 8, and when each shaft is turned the correspending plow will be v.raised or lowered aceordingly, or rather, 'when the shaft is turned in one direction the plow will be raised, and when the shaft is released theplow will drop by its own weight and return.'y

the shaft.

In order to operate the shafts 28 in succession to lift the plow-units, and'also -to release the same in succession to dropv the plow shares or units, a long diagonal shaft 30 is provided, suitably mounted upon upright brackets 31 which stand on the beams of the .main frame, the shaft being parallel to,

above, and in front of the diagonal beams 8' and 9. The shaft 30 has thereon a series of wheels 32 corresponding in number to the plow units, and each of these wheels 32 has asegment of teeth 33 arranged to engage a pinion 34 on the shaft 28, and when said wheels are rotated and the cogs are engaged with the pinions the latter will be turned, thereby turning the shaft 28 and hoisting the plow unit. In order' to hold the plow in lifted position until released a spring-pin 35 is provided which slides in guides 36 projectin from one of the bearing brackets 29, an this pin 35 is arranged to engage in a hole 37 in the adjacent side of the pinion 34, thereby locking said pinion. To release the pinion and allow the plow unit to drop, each wheel 32 has a cam 38 located diametrically opposite the cogs 33 and on the side of the wheel adjacent to the pin 35, and said pin has a lug 39 which projects into the path of the cam, and when the cam comes around it presses against said lug and forces back `the pin, withdrawing the same from the hole 37, thereby allowing the pinion and shaft 28 to turn and the plow unit to drop to the round.

The teeth33 on t e several wheels 32 are located in succession with respect to angular position so that they will operate succes sively, beginningat the foremost plow and so on down the line of plows, and the teeth are so proportioned that they wouldform, if all wheels were consolidated, a half circle. The number of teeth on the respective wheels and the proportions of the respective pinions, are worked outI according-to the number of plow units and the distance apart of the plow units in the line ofdraft, so that the ends of the furrows will be in line when all the plows are lifted. When the shaft 30 is turned by devicesto be described the teeth of the first wheel pick up the first pinion and turn the same and the first plow is lifted. The teeth of the next wheel then pick up the second shaft and the second plow is lifted, and so on down the line of plows until all are lifted, and as each plow is lifted the corresponding pin catches the pinion 34 and locks the plow in raised position.

'In order that the plows 4may be released in succession the cams 38 of the respective wheels are angularlyl advanced an equal vdistance to cover the remaining half circle or circumlference of the wheels 32, which cams thus correspond in `position to the teeth on the samewheel and being diametrically-'opposite thereto. Thus, to release the plows and allow the same to drop, the shaft 30-is turned a half revolution and the lock pins 35 are disengaged by the cams in succession, and 'the plow units drop successively to the ground.

F or driving the shaft 30 it is gearedito the axle of the wheel 12, the gearing including a clutch or trip device controlled'by the operator The axle of the main wheelj/s connected by a chain belt 40 and sprocket,

lwheels 41 and 42 to a cross shaft 43 which has at its outer end a sprocket 44 loose thereon. This sprocket is connected by a chain belt 45 to asprocket 46 fast on the outer end of a shaft 47 the inner end of which has thereon a bevelj gear 48 meshing with a spur gear 49 on the shaft 30. The-shafts are supported in suitable bearing brackets on the main .frame At its extreme outery end the shaft 43 has a fixed cross bar 50, fastenedy to the shaft at the middle, and having at its opposite ends two small rollers 51 arranged to hit or miss a projection 52 at the inner end of a lever 53 Ywhich is pivoted` at 54 to the wheel 44. A spring 55 tends to swing the lever 53 so as to bring the projection 52 in the line of movement of the rollers 51. Said projection is normally held out of said line of movement by mean'sof a trip ceases 57 is pulled the arm 56 is swung out; and the spring 55 turns the lever 53 so that its inner end will receive the contact of one of the rollers 5l and thereby lock the shaft 43 to otherwise, as desired. In order to disengage 4the coupling thus effected at the end of each revolution, a pit-man 58 is connected to the wheel 46 and to the stop lever 56. This pitman is provided with a spring 59 in the iniddle to cushion its operation and to allow the trip lever 56 to be pulled back by the operator. After the cord 57 is released the turn of the-wheel 46 will, in consequence of the pitlnan connection, lreturn said stop lever to its original position at the end of one revolution of the wheel 46, and in such position the outer end of the lever 53 will strike and stop against the arm 56, and the lever 53 will swing on its pivot, disengagingv its head or projection 52 from the roller 51, thereby disconnecting the sprocket 44from the shaft 43 and stopping the sprocket which, as stated, is loose on the shaft.- The parts are so proportioned that one turn of the sprocket 4-4 will `produce a half turn of the shaft 30. 'Henee, to lift the plows, the cord 57 is pulled, and to drop the samethe cord 57 is pulled again, when they will be successivelydropped by the means and in the manner above described. i

It is believed that the construction and operation will be fully understood from the above description. rNo limitation is implied by reason of the particularstructure shown,

since various modifications may be made within the scope of the invention. It will of course be appreciated that a traction engine or some other form of traction power 4will be connected to the front bar of the frame, a coupling member G0 beingshown for thatrpurpose.

I claim:

l. In a gang plow, the combination of a main frame, a wheel on which it is mounted, a series of 'plows arranged diagonally and connected to the frame, and means to successively lift or drop the plows, including a shaft geared .to the wheel and extending diagonally in parallelism to the plows, and a hoisting device for each plow, operatively connected to the shaft.

2. In a gang plow, the combination of a main frame, a series of plows arranged diagonally and connected to' the frame, and

means to successively lift` or drop the plows,

in the line of draft, whereby the plows vwill. be lifted or dropped in a straight line at the end or beginning of the furrows.

3. In a gang plow, the combination of a main frame, a series of plows arranged di agonally and connected to the frame, a hoisting device for each plow, mounted on the frame, and including a pinion, a shaft egtending across the frame andhaving a series of segment gear wheels thereon corresponding to the pinions, the respective segment gears being arranged in succession circumferentially, so` as to engage and operate the respective pinions in succession, `and thereby lift the plows in succession, means torelease the hoisting devices and drop the plows, desired.

4. In a plow, the combination of a frame, al plow pivotally connected thereto, a hoisting device on the frame, connected to the plow to lift the same, and including a' piniion' and a latch arranged to engage said.

and means to operate .the shaft when,"

pinion and lock the same to hold the plow in Y `raised position, a shaft on the frame, a wheel on the shaft having a segment of teeth engageable with the pinion to'turn the same and operate the hoist, and also having a. cam arranged to strike and release the lat-ch, to allow the plow to drop, and means to operate the shaft.

5. In a gang plow, the combination of a frame, a series of plows arranged diagonally and connected thereto, a series of hoisting devices. on the frame, connected respectively to the plows tolift the same, and each including a pinion and a latch engageable .therewith to lock the same and hold the plow in raised position, a shaft extending across the frame beside the hoisting devices, a series of wheels on the shaft, each wheelhaving a segment ofteeth engageablewith the pinion ofthe corresponding hoisting device to turn said pinion and operate the hoist, and each wheel also having a device constructed to engage and release the latch, to allow the plow to drop, the respective segments and devices on the wheels being angularly advanced to operate insuccession, whereby the plows will be raised or lowered consecutively from the first plow of the gang to the last, and means to operate the shafts when desired.

6. In a plow, the combination of a frame, a wheel on which the frame is mounted, a plow connected to the frame, a hoisting mechanism mounted on the frame and connected to the plow, and means actuated by the wheel to operate the hoisting mechanism, including a shaft and gearing between the shaft and the wheel provided with a tripping device manually operated to" operatively engage the gearing and automatically operated to disengage -the same.

7. In a plow, the combination ofja frame,

a Wheel on which the frame is mounted, a

' plow connected to the frame, a hoisting .v ism, including shaft-sone of which is geared to the Wheel, and the other to the hoisting mechanism, sprockets on said shafts, one 'sprocket beingV fast and the other loose, a belt Connecting said sprockets, an arm earried by the shaft of the loose sprocket, a lever pivoted to the loose sprocket and having a projection engageable by -the arm to drive the sprocket, a spring connected to said .lever andtending to turn the same to engaging osition, a manually released stop normally position, and means to automatically return4 the stop to disengage the lever, after said stop is manually released.

In testimony whereof, I affix my signature in presence of two Witnesses.

. CHARLES SMART. 4l/Vitnesses:

A. M. ECKMANN, HERMAN HANsoN.

oldng the lever in disengaged

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